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REVERSIBLE SKEW LAURENT POLYNOMIAL RINGS AND DEFORMATIONS OF POISSON AUTOMORPHISMS
A skew Laurent polynomial ring S = R[x ±1 ;α] is reversible if it has a reversing automorphism, that is, an automorphism θ of period 2 that transposes x and x -1 and restricts to an automorphism γ of R with γ = γ -1 . We study invariants for …